Marchesi D G, Thalgott J S, Aebi M
Department of Orthopaedic Surgery, University of Bern, Inselspital, Switzerland.
Spine (Phila Pa 1976). 1991 Mar;16(3 Suppl):S162-9. doi: 10.1097/00007632-199103001-00024.
The AO internal skeletal fixation system (ISFS) permits posterior spine fixation to be restricted to the vertebrae immediately adjacent to the lesion and allows manipulation of each instrumented vertebra in three planes. In a prospective study to assess the value of this fixation for adult spinal disorders, 68 patients were reviewed. The device was used in spondylolisthesis, postlaminectomy instability, post-traumatic kyphosis, degenerative scoliosis, spinal stenosis, tumors, and infections. A total of 322 transpedicular screws have been inserted without neurologic complication. Satisfactory results were achieved in 88% of the patients, and only four pseudarthroses (6%) occurred. The ISFS provides rigid stabilization to enhance bone graft consolidation and to allow rapid postoperative mobilization in a light external orthosis.
AO 内固定系统（ISFS）可将脊柱后路固定限制在紧邻病变的椎体，并允许在三个平面上对每个植入器械的椎体进行操作。在一项评估该固定方法对成人脊柱疾病价值的前瞻性研究中，对 68 例患者进行了回顾。该装置用于腰椎滑脱、椎板切除术后不稳定、创伤后驼背、退行性脊柱侧凸、椎管狭窄、肿瘤和感染。共植入 322 枚椎弓根螺钉，无神经并发症发生。88%的患者取得了满意的结果，仅出现 4 例假关节形成（6%）。ISFS 提供了坚强的固定，以促进植骨融合，并允许术后在轻便的外部矫形器辅助下快速活动。
